Here you can find the source of mkdirs(final File aDirectory)
private static void mkdirs(final File aDirectory)
//package com.java2s; /*/*from w w w.j a va 2 s.co m*/ * #%L * Nazgul Project: nazgul-forge-factory-api * %% * Copyright (C) 2010 - 2013 jGuru Europe AB * %% * Licensed under the jGuru Europe AB license (the "License"), based * on Apache License, Version 2.0; you may not use this file except * in compliance with the License. * * You may obtain a copy of the License at * * http://www.jguru.se/licenses/jguruCorporateSourceLicense-2.0.txt * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * #L% */ import java.io.File; public class Main { private static void mkdirs(final File aDirectory) { boolean success; if (aDirectory.exists()) { success = aDirectory.isDirectory(); } else { success = aDirectory.mkdirs(); } if (!success) { throw new IllegalArgumentException("Failed making directory [" + aDirectory.toPath().toAbsolutePath() + "]"); } } }